2145329 has 2 divisors, whose sum is σ = 2145330. Its totient is φ = 2145328.

The previous prime is 2145307. The next prime is 2145331. The reversal of 2145329 is 9235412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1760929 + 384400 = 1327^2 + 620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145329 is a prime.

Together with 2145331, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 11.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 2145298 and 2145307.

It is not a weakly prime, because it can be changed into another prime (2145359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072664 + 1072665.

It is an arithmetic number, because the mean of its divisors is an integer number (1072665).

2^2145329 is an apocalyptic number.

It is an amenable number.

2145329 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145329 is an equidigital number, since it uses as much as digits as its factorization.

2145329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 2145329 is about 1464.6941660292. The cubic root of 2145329 is about 128.9727522925.

The spelling of 2145329 in words is "two million, one hundred forty-five thousand, three hundred twenty-nine".